Java double entry table

Question

Does anyone know a double entry table implementation in Java I can download ?

I need to do something like this

   1  2  3
   _______
a| x  y  z 

b| h  l  m

c| o  a  k

table.get(a,1) would return x

Of course, it should use any Object as key, value, etc

Answer 1

There are two basic approaches, depending on your needs.

One is to make a Hashtable (or similar) of Hashtables.

Hashtable<Integer, Hashtable<String, String>> = ...;

Another approach is to build your own datatype that represents an (Integer, String) pair, so you can do:

Hashtable<YourFancyDatatype, String>